APA (7th ed.) Citation
Knebel, B., & Postels, G. (1989). Einführung in Informix-SQL. Dr. Alfred Hüthig Verlag.
Chicago Style (17th ed.) Citation
Knebel, Bernd, and Gerhard Postels. Einführung in Informix-SQL. Heidelberg: Dr. Alfred Hüthig Verlag, 1989.
MLA (9th ed.) Citation
Knebel, Bernd, and Gerhard Postels. Einführung in Informix-SQL. Dr. Alfred Hüthig Verlag, 1989.
Warning: These citations may not always be 100% accurate.